The surveillance tape of George Zimmerman made barely half an hour after the shooting, obtained exclusively by ABC News from the Sanford Police Department, could be used as evidence, if Zimmerman is brought up on charges, sources tell ABC News.

Zimmerman's attorney would not comment on the tapes, which show his client walking into a police station with no visible signs of blood minutes after he shot and killed Trayvon Martin following what Zimmerman claims was a life-or-death struggle with the teen.

"I'm not going to litigate this case in the media," said attorney Craig Sonner. "It looks like it's a standard booking video of when they brought him in. I can't tell anything from this video."

But the tapes are relatively clear, coming as they do from recently installed state-of-the-art cameras. In the tapes an officer examines the back of Zimmerman's head. The 28-year-old Zimmerman claims the teen, who was walking back to his father's fiancé's home after picking up Skittles and an iced tea on Feb. 26, attacked him. Zimmerman told police that Martin punched him and bashed his head on the concrete. The police report notes there was blood on his head and that he was treated on the scene.

But on the surveillance video you can see Zimmerman walking steadily through the police station and his face appears blood-free. His light gray shirt shows no visible signs of blood.

While Zimmerman's attorney would not comment on the tape, he also seemed unsure whether his client had actually received medical attention for his wounds.

"The facts will come out in this case. I'm not the source of facts," responded Sonner. "I'm not the witness. I don't have access to police files."

On Tuesday the Sanford Police released a statement saying that journalists who try to contact city employees "when they are in their roles as private citizens," calling it "stalking," would be arrested. Today State Attorney Angela Corey's office released a statement saying that it would not comment any further and "If anything needs to be disseminated, you will receive an alert via email."